Question

if the circumference of a triangle is 132 meters . Then calculate radius and diameter ( take π=22÷7)​

Answer 1

Answer:

it should be a circle instead of a triangle

r = 7m, d = 14m

2×pie×r = circumference

= 132m

r = 132÷(2×pie)

= 7m

d = 2r

= 14m

Answer 2

Correct Question :-

• If the circumference of a Circle is 132 meters . Then calculate radius and diameter ( take π=22÷7)

Given :-

• Circumference = 132m

To Find :-

• Radius and Diameter of the circle.

Solution :-

➟ Circumference of Circle = 2πr

➟ 132 = 2 × 22/7 × Radius

➟ 132/2 = 22/7 × Radius

➟ 66 = 22/7 × Radius

➟ 66 × 7 = 22 × Radius

➟ 462/22 = Radius

➟ 21m = Radius

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➟ Diameter of Circle = 2 × Radius

➟ Diameter of Circle = 2 × 21

➟ Diameter of Circle = 42m

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So, Radius = 21m and Diameter = 42m

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Formulas Related to Circles :-

• Circumference = 2πr
• Area = πr²
• Diameter = 2r
• Radius = Diameter/2

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